Where more than one process of producing sparkling wine or artificially carbonated wine is used, the appropriate TTB officer may require the portion of the premises used for the production and storage of wine made by each process (bottle fermented, bulk fermented or artificially carbonated) to be segregated as provided by Sec. 24.27. (Sec. 201, Pub. L. 85-859, 72 Stat. 1381, as amended (26 U.S.C. 5365)) [T.D. ATF-299, 55 FR 24989, June 19, 1990, as amended by T.D. ATF-409, 64 FR 13683, Mar. 22, 1999]